Cover for evaporatsng-pans



(No ModeLj G. E.' WHEELER. COVER FDR BVAPORATING FANS.

Patented Nov. 20,

Pny/7195555 PATENT EEICE.

GEORGE E. WHEELER, OF CHAZY, NEW YORK.

COVER FOR EVAPORATiNG-PANS.

SPECIFICATION forming part of Letters Patent No. 393,196, dated November 20, 1888.

Application filed February 12, 1887. Serial No. 227,444. (o model.)

To all whom it may concern:

Be it known that I, GEORGE E. WHEELER, a citizen of the United States, residing at Chazy, in the county of Clinton and State of New York, have invented certain new and useful Improvements in Covers for Evaporating- Pans, of which the following is a speciiication. My invention relates to covers for evaporating-pans for use in the evaporation of fluids.

The main objects of my improvements are simplicity and cheapness of construction, and convenience and emciency in use.

In the accompanying drawings, Figure 1 is a plan view of a cover which embodies my improvements. Fig. 2 is a longitudinal vertical section of the same on line :c x of Fig. l. Fig. 3 is a transverse section of the same on line yy of Fig. l. Fig. 4 is a view of a portion of the same on an enlarged scale; and Fig. 5 is a vertical section of a portion of my cover on line z z ofFig. 3, on the same scale as Fig. 4.

lVIy cover is adapted for use with any ordinary shallow evaporating-pan having an open top. The cover Bis constructed so as to lit upon the open top of the particular form of pan employed. I prefer to make it with a longitudinal ridge and sloping sides, a form which might be termed roof-shaped. The ridge or backbone a extends along .through the middle at the top, and a series of diaphragms or partitions, b, are secured to its under side. 'Ihe outer ones of said diaphragms b serve as end pieces, and all of them are designedto extend downwardly to a point within the pan below the fluid-line but not quite to the bottom of the pan when the cover is in place. Ihe upper edges of these partitions b correspond in contour to the shape of the complete cover,

as viewed in crosssection,and their lower edges to the form of the pan. 'Ihe two end partitions or diaphragms also serve to close, as it were, the gables of the cover, and they are set a distance from each other a little less than the length of the pan, so as to shut into the pan at the ends. Longitudinal rods c c extend through these partitions near the ends, the partitions being secured thereto, whereby the ridge a, partitions I), and rods c c form a frame-work for the complete cover, the rods c c and ridge c forming the longitudinal connection of said frame. Doors d, on each side of the ridge a and over each space or chamber between the partitions b, complete the cover. The ridge, however, is provided with an opening at the top of each chamber, over which I place a draft-tube or chimney, f.

I form each door d of a frame-work, g, preferably of wood, yextending around the edge of the door. Upon the under sideof the framework I secure a sheet or coat of paper, h, or other equivalent non-conducting or insulating material, as, for instance, asbestus. The top and bottom of the frame-work is then covered with a thickness of sheet metal, leaving a deadairspace, k, within each frame-work and extending over the main portion of each door. rIhe chimneys fare in the main metal tubes with a covering of non-conducting or insulating material, m, upon the outside. Each partition b is provided at the top edge with a lateral flange, n, which extends under the doors for a short distance at their confronting edges, thereby protecting the seam or crack between said edges. The under side of each door is also provided with a iiange, o, to cover the crack between the hinged edge of the door and the edge of the ridge-piece a. This ange, as shown in the drawings, is made integral with the sheet of metal that covers the bottom of the frame-Work of each door; but it is immaterial whether it is in one piece with said sheet or otherwise.

By constructing the cover with the partitions and compartmentdoors, any chamber within the pan may be examined without in the least disturbing the other compartments.- By attaching the partitions to the cover instead of to the pan, they all can be removed bodily with the cover and leave the entire pan free from all obstructions.

Another application, Serial No. 284,056,

filed by me August 29, 1888, shows, but does' not claim, some of the features herein shown, described, and claimed.

I claim as my invention- 1. The combination of the transverse partitions b, having the flanges n at their upper edges, with longitudinal connections for said partitions, and the doors d, the side edges of which doors close upon said anges, substantially as described, and for the purpose specified.

IOO

which consists of the ridge-piece a, the partitions b, the rods c c, doors d, and chimneys f, substantially as described, and for the purpose specified.

5. In an evaporator-cover, the ridge-piece a, the doors d, hinged thereto, and having the ange o to shut under the edge of said ridgepiece, substantially as described, and for the purpose specified.

GEORGE E. WHEELER.

Vitnesses:

F.v I-I. SEVERANCE, XV. L. VEvER. 

